CN106430218A - Comprehensive utilization technology of laterite-nickel ore melting alkaline leaching - Google Patents
Comprehensive utilization technology of laterite-nickel ore melting alkaline leaching Download PDFInfo
- Publication number
- CN106430218A CN106430218A CN201610784669.3A CN201610784669A CN106430218A CN 106430218 A CN106430218 A CN 106430218A CN 201610784669 A CN201610784669 A CN 201610784669A CN 106430218 A CN106430218 A CN 106430218A
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- CN
- China
- Prior art keywords
- sodium hydroxide
- magnesium
- nickel ore
- filtrate
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
- C01F5/06—Magnesia by thermal decomposition of magnesium compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/24—Magnesium carbonates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the field of metallurgy, in particular to a comprehensive utilization technology of laterite-nickel ore melting alkaline leaching. The technology comprises the steps that sodium hydroxide is added into a reaction kettle, deionized water is added for completely dissolving the sodium hydroxide, then laterite-nickel ore is added, heating is performed, and centrifugal separation is performed to obtain a filtrate and filter residues; the filtrate is heated to 80 DEG C, CO2 gas is introduced to obtain silicon dioxide and a sodium carbonate solution; lime milk and sodium carbonate rapidly react; after causticization of the sodium carbonate solution, CaCO3 precipitates and sodium hydroxide are obtained; filter residues and water are mixed, stirring and CO2 gas introduction are performed at the same time, vacuum filtration is performed, filter cakes are carbonized residues, repeated washing is performed, the filtrate is a magnesium bicarbonate solution, excessive heating is performed through the magnesium bicarbonate to decompose precipitated magnesium carbonate, the magnesium carbonate is calcined to obtain magnesium oxide. In the technological process, no waste gas or wastewater or waste residue is discharged, chemical raw materials can be recycled, and the novel environment-friendly comprehensive resource utilization technology meets the requirement for national development of circular economy.
Description
Technical field
The present invention relates to field of metallurgy, specially lateritic nickel ore melt alkaline Leaching comprehensive utilization process.
Background technology
Nickel is the metal of most worthy in lateritic nickel ore, is the target product in traditional handicraft.But due in lateritic nickel ore
The content of nickel is low, thus can produce a large amount of debris dumps during nickel fibers and abandon, land occupation, pollution environment.On the other hand, red
Contain substantial amounts of britesorb mineral, bloodstone etc. in native nickel minerals, which is carried out making full use of and can prepare silicon, magnesium, ferrum etc.
Product, had both improved lateritic nickel ore high value added utilization, can reduce the discharge of garbage again, meet recycling economy, clean manufacturing and
Improve the requirement to mineral resources comprehensive utilization rate.
Content of the invention
For above-mentioned technical problem, the present invention provides a kind of lateritic nickel ore high concentration alkali and soaks comprehensive utilization process.
Concrete technical scheme is：
Lateritic nickel ore melts alkaline Leaching comprehensive utilization process, comprises the following steps：
Lateritic nickel ore, heating is added after sodium hydroxide is put in reactor, plus sodium hydroxide is completely dissolved by deionized water
To 250 DEG C, dilute, during 100 DEG C of cooling, it is centrifugally separating to obtain filtrate and filtering residue；
Filtrate is heated 80 DEG C of flow velocitys and is passed through CO2Gas, to pH value be 9 when terminate reaction, vacuum filtration, obtain silicon dioxide and
Sodium carbonate liquor；
A certain amount of activated CaO is taken, deionized water is added, lime cream is formed, lime cream is reacted with sodium carbonate rapidly；
CaCO is obtained after sodium carbonate liquor causticization3Precipitation and sodium hydroxide；Sodium hydroxide solution is returned after evaporation and concentration
The alkaline process of lateritic nickel ore carries silicon technology；CaCO3Light calcium carbonate product is obtained after precipitating scrubbed, drying；
Filtering residue is mixed with water, is passed through carbon dioxide vacuum filtration while stirring, filter cake is carbide slag, to wash repeatedly
Wash, gained filtrate is to cross heat resolve precipitated magnesium carbonate magnesium bicarbonate solution, through magnesium bicarbonate solution, and magnesium carbonate is calcined and obtained
Magnesium oxide.
The low-grade laterite lateritic nickel ore that the present invention is provided melts alkaline Leaching comprehensive utilization process, no gives up in technical process
Gas, waste water, the discharge of waste residue, and recycling for industrial chemicals is achieved, it is that the comprehensive utilization of resources of an environmental protection is new
Technique, meets the requirement of national development recycling economy.
Specific embodiment
For the ease of understanding the present invention, by specific embodiment, the present invention will be described more fully below.But
It is that the present invention can be realized in many different forms, however it is not limited to embodiment described herein.On the contrary, providing this
The purpose of a little embodiments is to make the understanding to the disclosure more thorough comprehensive.
Lateritic nickel ore melts alkaline Leaching comprehensive utilization process, comprises the following steps：
Lateritic nickel ore, heating is added after sodium hydroxide is put in reactor, plus sodium hydroxide is completely dissolved by deionized water
To 250 DEG C, dilute, during 100 DEG C of cooling, it is centrifugally separating to obtain filtrate and filtering residue；
Filtrate is heated 80 DEG C of flow velocitys and is passed through CO2Gas, to pH value be 9 when terminate reaction, vacuum filtration, obtain silicon dioxide and
Sodium carbonate liquor；
A certain amount of activated CaO is taken, deionized water is added, lime cream is formed, lime cream is reacted with sodium carbonate rapidly；
CaCO is obtained after sodium carbonate liquor causticization3Precipitation and sodium hydroxide；Sodium hydroxide solution is returned after evaporation and concentration
The alkaline process of lateritic nickel ore carries silicon technology；CaCO3Light calcium carbonate product is obtained after precipitating scrubbed, drying；
Filtering residue is mixed with water, is passed through carbon dioxide vacuum filtration while stirring, filter cake is carbide slag, to wash repeatedly
Wash, gained filtrate is to cross heat resolve precipitated magnesium carbonate magnesium bicarbonate solution, through magnesium bicarbonate solution, and magnesium carbonate is calcined and obtained
Magnesium oxide.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
The restriction that therefore can not be interpreted as to the scope of the claims of the present invention.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improved, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (1)
1. lateritic nickel ore melts alkaline Leaching comprehensive utilization process, it is characterised in that comprise the following steps：
Lateritic nickel ore is added after sodium hydroxide is put in reactor, plus sodium hydroxide is completely dissolved by deionized water, be heated to 250
DEG C, dilute, cooling 100 DEG C when, be centrifugally separating to obtain filtrate and filtering residue；
Filtrate is heated 80 DEG C of flow velocitys and is passed through CO2Gas, is to terminate reaction when 9 to pH value, and vacuum filtration obtains silicon dioxide and carbonic acid
Sodium solution；
A certain amount of activated CaO is taken, deionized water is added, lime cream is formed, lime cream is reacted with sodium carbonate rapidly；
CaCO is obtained after sodium carbonate liquor causticization3Precipitation and sodium hydroxide；Sodium hydroxide solution returns laterite nickel after evaporation and concentration
The alkaline process of ore deposit carries silicon technology;CaCO3Light calcium carbonate product is obtained after precipitating scrubbed, drying；
Filtering residue is mixed with water, is passed through carbon dioxide vacuum filtration while stirring, filter cake is carbide slag, cyclic washing, institute
It is magnesium bicarbonate solution to obtain filtrate, is crossing heat resolve precipitated magnesium carbonate through magnesium bicarbonate solution, and magnesium carbonate is calcined and aoxidized
Magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784669.3A CN106430218A (en) | 2016-08-31 | 2016-08-31 | Comprehensive utilization technology of laterite-nickel ore melting alkaline leaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784669.3A CN106430218A (en) | 2016-08-31 | 2016-08-31 | Comprehensive utilization technology of laterite-nickel ore melting alkaline leaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106430218A true CN106430218A (en) | 2017-02-22 |
Family
ID=58091346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610784669.3A Pending CN106430218A (en) | 2016-08-31 | 2016-08-31 | Comprehensive utilization technology of laterite-nickel ore melting alkaline leaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106430218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116419910A (en) * | 2020-10-02 | 2023-07-11 | 迪金森公司 | Scalable synthesis of coating materials |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605174A (en) * | 2012-04-05 | 2012-07-25 | 北京科技大学 | Process method for respectively recovering nickel and iron from low-nickel high-iron laterite |
| CN102876887A (en) * | 2012-09-28 | 2013-01-16 | 广西银亿科技矿冶有限公司 | Method for comprehensively recycling metal from laterite-nickel ore leaching agent |
| CN104278151A (en) * | 2013-07-12 | 2015-01-14 | 无锡成博科技发展有限公司 | High-concentration-alkali-leaching comprehensive utilization process for laterite-nickel ore |
-
2016
- 2016-08-31 CN CN201610784669.3A patent/CN106430218A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605174A (en) * | 2012-04-05 | 2012-07-25 | 北京科技大学 | Process method for respectively recovering nickel and iron from low-nickel high-iron laterite |
| CN102876887A (en) * | 2012-09-28 | 2013-01-16 | 广西银亿科技矿冶有限公司 | Method for comprehensively recycling metal from laterite-nickel ore leaching agent |
| CN104278151A (en) * | 2013-07-12 | 2015-01-14 | 无锡成博科技发展有限公司 | High-concentration-alkali-leaching comprehensive utilization process for laterite-nickel ore |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116419910A (en) * | 2020-10-02 | 2023-07-11 | 迪金森公司 | Scalable synthesis of coating materials |
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Application publication date: 20170222 |